Tones or shades of any color(s) as the background to your subject

This challenge requires varied shades of any color or colors as the background. Try to showcase a subject by having a background that does not distract, is not absent, yet adds interest to the picture by it's varied color, tone or shadowing. See examples. You might achieve it with lighting or a shallow depth of field to create the bokeh. Natural outdoor backgrounds may work too. Good luck!